From: Hendrik Brueckner <brueckner@linux.ibm.com>
Date: Fri, 26 Oct 2018 09:48:29 +0200
Subject: s390/cpum_cf: add ctr_stcctm() function
Git-commit: 86c0b75715e711c035ae0ed9820ae95f14fe2c0d
Patch-mainline: v5.1-rc1
References: jsc#SLE-6904 FATE#327581

Introduce the ctr_stcctm() function as wrapper function to extract counters
from a particular counter set.  Note that the counter set is part of the
stcctm instruction opcode, few indirections are necessary to specify the
counter set as variable.

Signed-off-by: Hendrik Brueckner <brueckner@linux.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
 arch/s390/include/asm/cpu_mcf.h |   19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

--- a/arch/s390/include/asm/cpu_mcf.h
+++ b/arch/s390/include/asm/cpu_mcf.h
@@ -49,6 +49,25 @@ static inline void ctr_set_stop(u64 *sta
 	*state &= ~(cpumf_ctr_ctl[ctr_set] << CPUMF_LCCTL_ACTCTL_SHIFT);
 }
 
+static inline int ctr_stcctm(enum cpumf_ctr_set set, u64 range, u64 *dest)
+{
+	switch (set) {
+	case CPUMF_CTR_SET_BASIC:
+		return stcctm(BASIC, range, dest);
+	case CPUMF_CTR_SET_USER:
+		return stcctm(PROBLEM_STATE, range, dest);
+	case CPUMF_CTR_SET_CRYPTO:
+		return stcctm(CRYPTO_ACTIVITY, range, dest);
+	case CPUMF_CTR_SET_EXT:
+		return stcctm(EXTENDED, range, dest);
+	case CPUMF_CTR_SET_MT_DIAG:
+		return stcctm(MT_DIAG_CLEARING, range, dest);
+	case CPUMF_CTR_SET_MAX:
+		return 3;
+	}
+	return 3;
+}
+
 struct cpu_cf_events {
 	struct cpumf_ctr_info	info;
 	atomic_t		ctr_set[CPUMF_CTR_SET_MAX];